Mac OS, Firefox freezes and after that I can't shut down my Computer
Hello, I have used Firefox for years without any problems with my MacBook. Now, some weeks ago, occasionally my browser freezes during loading of websites and it was also no longer possible to close the browser at normal way. I had to use the the Mac option 'close immediately' (sofort beenden). I could work with other programs and also with the Safari browser quite normal but I could no longer shut down my computer. The only possibility to get a shut down was to press the on/off button for several seconds. This behavior of Firefox is now reproducible. Sometimes I can open several websites without problems before Firefox freezes, sometimes it freezes immediately after starting Firefox. In all these cases I had to close Firefox by the 'sofort beenden' option and I could no longer shut down my computer the normal way. No problems at all if I don't use Firefox and use the Safari browser instead. I use the latest version of Firefox (82.0.3) and Mac OS Catalina (10.15.7). I have already deinstalled Firefox and reinstalled it after a new download from the Mozilla website but got no change of this behavior. I run 'Malwarebytes' and scanned the computer with the AVG antivirus software and both didn't show any deficiencies . Perhaps somebody is able to help me, many thanks for this.